TLK10031: 10G repeater application implementation

Thank You Rodrigo Natal for fast response,

TESTEN is grounded and the system clock is 156.25MHz. 

We have not yet started with software development. So we are not able read or write the TLK registers for time being. We want to check that TLK will work in default register values or not.

I need one clarification i.e. Can we implement loopback with default registers values of TLK(without altering register values)?

Thank you in advance.

Thanks again Rodrigo Natal for your response,

So as per your thoughts i think I will consider register writes are necessary for implementing loopback.

And can you elaborate what is external loopback via system electrical connection? I didn't understand this.

First we have implemented a direct loopback  with our 10G tester(Trex). Port 0 of tester is directly connected to Port 1 of tester. This connection is working fine. We are able see 10G data communication. And is this what your suggesting ur to do?

But loopback is not working if we use TLK modules between these tester. 

We have connected Port 0 of 10G tester(Trex) to Highside of TLK10031 module 1 and the High side of TLK10031 module 2 is connected back to Port 1 of our 10G tester. Low sides of both TLK's are connected as per the previous block diagram. This implementation is not working.

So if you want us to write to TLK registers to make it work, if possible please tell us the procedure (like what all the registers we need to write). We have gone through the datasheet of TLK10031 but it didn't helped us.

Note: Trex tester is used for generating 10G signal.

Thank you.

Thank you Rodrigo Natal,

I downloaded and installed the TI software tool you have sent, but its not opening as I don't have National Instruments Labview Run time engine and the TLK10232 EVM to work with.

Can you please tell me what all the registers to be updated to activate the link, because link is not establishing between 10G tester and TLK10031 when I connect the 10G optical cable between them. 

And can you tell me what all the registers I need to update to enable basic working of TLK10031 module.

Thank you.

Thank you Rodrigo Natal for the information,

We are facing issue in reading/writing the registers only. We are not able to read/write the registers of TLK10031. We have tried a method using a reference document that we found from web. But still we are not able to read/write TLK registers using our controller(TM4C129DNCPDT). 

Currently we are using Clause 22 frame format(MODE SEL pin is HIGH). Please can you provide any reference code for clause 22 or clause 45 read/write operation. 

And we are using 10G SFP optical interface, can we use Clause 22 format for reading/writing TLK registers? Or is it compulsory to use Clause 45 format?

Thank you.

Thank you Rodrigo Natal,

Is PRTAD address required for Clause 22 format? I need some clarification regarding below data given in TLK datasheet.

As per the above data, ne need of PRTAD address for Clause 22 format. Please help me understand this.

And one more doubt is in clause 22 frame PHY ADD means is it PRTAD address or device address(like 0x1E for vendor specific registers or 0x01 for PMA/PMD control registers)??

Thank you.